Get a power boost! BoostBloc2000 from Etn is a backup battery pack with a 2000mAH lithium ion battery that gives you long-lasting reliable power whenever and wherever you need it. Fast and effcient, when fully charged BoostBloc2000 fully charges most smartphones so you're never caught powerless. With its sleek and elegant design, BoostBloc2000 fts in the palm of your hand.BoostBloc2000 features a Micro-USB DC input to use with most smartphone chargers and a standard USB port for charging any mobile device. An LED charge indicator lets you monitor the battery charge level when you give it a quick shake. Whether you're on a plane or trekking in the woods, let BoostBloc2000 provide the power you need to stay fully charged wherever you are.